I just updated my Intel Desktop Board DZ77RE-75K BIOS, and all seemed to go well until I went to boot. For some reason the BIOS now isn't detecting any of my SATA drives. One is an Intel SSD with the OS, another is a RAID 0, and the CD drive; none of these are being detected.
In the Intel Visual BIOS, under boot order, it says "no boot drive". If I go to SATA Config, it lists all the ports as "Not Installed". Chipset SATA is on, chipset SATA mode is set to RAID. Secondary SATA is enabled.
If I hit F10 during boot, it lists my internal card reader (USB3) ports, and five devices as "Unknown Unknown".
Okay, after stepping away for an hour, the drives started working again! Don't ask me how, but thanks anyway!